Bhagavad Gita 18.7 Chapter 18, Verse 7

नियतस्य तु संन्यासः कर्मणो नोपपद्यते ।
मोहात्तस्य परित्यागस्तामसः परिकीर्तितः ॥१८.७॥

niyatasya tu saṃnyāsaḥ karmaṇo nopapadyate
mohāttasya parityāgastāmasaḥ parikīrtitaḥ

Meaning

Renouncing one's prescribed duty is not right. Giving it up out of delusion is declared to be tamasic.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 18.7 (Chapter 18, Liberation through Renunciation (Moksha Sannyasa Yoga), Verse 7)